Table 1. Ecopath models used for analyses of marine mammals consumption.

Ecosystems	Area covered (km2)	No of trophic groups	Marine mammals groups	Average pedigree or marine mammals' diets	Reference
Eastern Bering	484,500	26	1) Baleen whales	0.7	National Research
Sea			2) Toothed whales		Council [30]
			3) Sperm whales
			4) Beaked whales
			5) Walrus and bearded seals
			6) Other seals
			7) Steller sea lions
Northern Gulf	103,812	32	1) Cetaceans	0.6	Morissette et al. 2003
of St.			2) Harp seals		[109]
Lawrence			3) Hooded seals
			4) Grey seals
			5) Harbour seals
Benguela	179,000	32	1) Seals	0.7	Shannon et al. 2004 [78]
system			2) Cetaceans
Eastern	32,800,000	39	1) Baleen whales	0.8	Olson and Watters [93]
tropical Pacific			2) Toothed whales
			3) Spotted dolphins
			4) Meso. dolphins
North Sea	570,000	32	1) Seals	0.7	Christensen et al. 2002 [77]
Gulf of Thailand	101,384	40	1) Marine mammals	0.5	FAO/FISHCODE 2001 [110]
Strait of	6,900	27	1) Transient orcas	0.6	Martell et al. 2002 [111]
Georgia			2) Dolphins & Resident orcas
			3) Seals
			4) Sea lions